Calendar.



C. E. LUNDBERG.

CALENDAR.

APPLICATION FILED DEC. 31. 1915.

Patented Feb. 6, 1917.

2 SHEETSSHEET I.

CARL E. LUNDBERG, F SPOKANE, WASHINGTON.

CALENDAR.

Specification of Letters Patent.

Patented Feb. 6, 191%.

Application filed Decembei 31, 1915. Serial No. 69,629.

To all whom it may concern:

Be it known that I, CARL E. LUNDBERG, a citizen of the United States,residing at Spokane, in the county of Spokane and State of Washington,have invented certain new and useful Improvements in Calendars,

of which the following is a specification.

This invention relates to calendars and has for its object the provisionof a calendar which may be used for a long period of time and be aseasily read as the calendars now in common use which are arranged forservice during only one year. One object of the invention is to providea novel construction and arrangement ofparts whereby the calendar may beset at the end or beginning of a month so that the dates for the ensuingmonth may be easily and correctly read. A further object of theinvention is to provide a novel arrangement whereby the numeralsdesignating dates may be employed through a long period with slightshifting of the elements of the calendar.

Other incidental objects of the invention will appear as the descriptionof the same proceeds and the invention resides in certain novel featureswhich will be particularly pointed out in the claims following thedescription.

In the accompanying drawings:

Figure 1 is a front elevation of a calendar embodying mypresentjmprovements;

Fig. 2 is a face view of the card or dial displaying the names of themonths;

Fig. 3 is a face view of the card displaying the days of the month;

Fig. 4: is a rear view of said card;

Fig. 5 is a transverse section.

In carrying out my invention, I employ a face plate 1 which may be ofcard board or any other suitable material which will be durable andpresent an attractive appearance. In the lower portion of this faceplate,

I provide an arcuate opening, indicated at 2, through which the days ofthe month may be read; and along the upper arcuate edge of said openingI display by printing, em bossing, or other means, the names of the daysof the week in chronological order be ginning with Sunday, as indicatedat 8. Above the names or designations of the days of the week, I provideopenings which are preferably rectangular in outline and are spacedapart so as to lie upon different radii of the arcs defined by theopening 2. The larger intermediate slot or opening 4 is designed topermit the display of the name of a month while the smaller openingsorslots 5, which are disposed below and adj acent the ends'of theopening or slot l, are intended one to permit the display of figuresdenotmg the number of days in the current month and the other to permitthe display of numerals designating the number of the year. In the edgesof the face plate 1 are small notches 6 which are designed to facilitatemanipulation of cards or dials which are pivotally mounted upon the rearface of the plate 1 by a rivet, eyelet, or similar pivot, as indicatedat 8, this pivot being located at the center of the arc defined by theopening 2. As shown most clearly in Fig. 2, the dial 7 has the names ofthe months printed or otl'ierwise displayed thereon near and concentricwith its edge, while between the edge and the names of the months aresmall slots 9 and numerals 10 denoting the number of days in a month.These slots 9 and the numerals 10 are located in a prescribed orderwhich is determined by calculations previous to the making of thecalendar so that, when the calculations have once been made, thecalendar conforming thereto may be manufactured in any desiredquantities. The dial or month-displaying card is held to the face plateby small lugs or guides 11 secured upon the back of the face plate andoverlapping the edge of the dial, as indicated in Fig. 1. The card 12,displaying the days of the month, is mounted upon the pivot 8 so as toturn freely thereon and between the said card and the dial 7, I mountupon the said pivot a pointer 13 which is constructed with alongitudinal slot, indicated at 1.41:, to engage the pivot and permitthe pointer to be shifted to any desired position. The parts should beassembled sufiiciently close to retain the pointer in a set position byits frictional engagement with the dial 7 and card 12 while at the sametime permitting its free adjustment. The card 12 is sector-shaped andits arcuate edge is disposed concentric with the pivot, as will bereadily understood. The card is held to the face plate by brackets orguides 15 secured upon the back of the face plate and overlapping thelower edge of the card, while upon the rear face of the card at thelower arcuate edge thereof is a projection or stop 16 which is adaptedto impinge against the cracked 15 and thereby limit the movement of tinBCtOlf in either direcn A, v u

tion. Upon reference to Fig. 3, it will be noted that upon the frontface of the card 12, are radial columns 17 in which are dis playednumbers corresponding to the days of the month, the said numbers beingprinted consecutively on arcuate lines. It will alsobe noted that someof the numbers are duplicated, the duplicated numbers being so arrangedthat whether the first day of the 1 month falls on a Sunday, a Saturday,or

any other day of the week, the days of the month may be readconsecutively and will appear in the columns under the properdesignations 3. Above the columns 17, I

- display a plurality of numbers designating the years, as indicated at18, these numbers being disposed in radial columns and on arcuate linesand according to previously determined calculations, so as to cooperatewith the slots 9 in the dial 7 and be thereby displayed through one ofthe openings 5. Upon the rear face of this card 12, I print or otherwisedisplay a table 19 containing columns in which are displayed numeralscorresponding to years for succeeding centuries while at the top of theseveral columns are designations of years which may, for convenience, betermed the governing or designating years.

Assuming, for the sake of illustration, that it is desired to set thecalendar for the month of December in the year 1915, the dial 7 isturned until the name of the month (December) appears in the slot oropening 1.-

the said slot, whereupon the days of the month will be found in theirproper order under the proper designations 3 so that it may be seen at aglance on what day of the week any date falls. The indicator 13 may beshifted daily so as to designate the current date or it may be shiftedso as to be hidden by the face plate 1, if preferred. The indicator willpreferably be of a color contrasting with the face of the calendar andthe arcuate opening may be set off by a line 20 imprinted upon the faceof the calendar and tending to impart an ornamental appearance thereto.The calendar will be arranged so that for a certain series of years theoperation just described will be sufficient to set the calendar for anyparticular month without consulting the table 19. When it is desired toset the calendar for months outside of these governing or designatingyears, it will be necessary to consult the table 19 and as certain inwhat column of the said table the desired year is noted. A glance at thetop of the said column will determine in which of the governing yearsthe dates corresponded to the year for which the calendar is to be setand the date card 12 is then shifted until said governing year isdisplayed in one of the slots 9 and the alined opening 5.

The particular order in which the designations 1S and the slots 9 arelocated is immaterial. provided they are located according to a definitesystem so as to cooperate and correctly display the designations. Thecalendar will be read in the same manner as the ordinary calendars nowin general use and a person using the calendar can always tell at aglance any particular date. There are no unnecessary figures to distractthe eye and no mental calculations are needed when setting the calendar,which is effected by merely adjusting the members 7 and 12 in thedescribed manner.

Obviously, the face plate may be formed from a sheet of material largeenough to be folded so as to cover the backs of the cards 7 and 12 inwhich event the table 19 may be printed on the back fold of the sheet.

It is also to be noted that the period covered by the designations 18may be extended by simply pasting over the same a slip under which thedesired years have been printed in the proper order.

Having thus described the invention, what is claimed as new is:

1. A calendar comprising a face plate having a large display opening inits lower portion and provided above said opening with other smalleropenings and having designations for the days of the week displayed inchronological order above the first-named opening and below the saidsmaller openings, a dial mounted upon the back of the face plate andhaving the names of the months and the number of days in the severalmonths designated thereon in position to be displayed through some ofthe upper dis play openings in the face plate and provided with aplurality of slots each adapted at times to register with an upperdisplay opening in the face plate, and a card mounted on the back of theface plate and having designatedthereon a plurality of years in positionto be displayed through one of the upper display openings in the faceplate and the slot in the dial registering with said display opening andhaving the days of the month designated chronologically below thedesignations for the years and arranged to be displayed through thelarger display openings in the face plate.

2. A calendar comprising a face plate having an arcuate display openingin its lower portion and having designations for the days of the weekalong the upper edge of said opening and further provided above saiddesigations With a plurality of smaller display openings, one of saiddisplay open ings being disposed above the others and all located onradii of said arcuate opening, a dial pivoted on the back of the faceplate and having displayed thereon the names of months in position to beread through the last-mentioned display opening and the number of daysin a month to be read through one of the said lower display openingsabove the days of the Week, the dial being provided with a plurality ofslots each adapted at times to register With the other of said displayopenings, and a card ture.

CARL E. LUNDBERG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latenta Washington, D. C."

